LAGRANGE, Maine — An unidentified man was in police custody Thursday night after what reportedly began with an assault in Orono and ended with a roughly 12-hour police standoff in a home on Brimstone Road.

The man, who has not yet been identified, left the home where he had barricaded himself shortly before 8:30 p.m., Penobscot County Sheriff Glenn Ross said Thursday evening.

Ross referred questions about the incident to the Orono Police Department, which is leading the investigation. Attempts to reach Orono police Thursday night were not successful.

Orono police were investigating an assault that reportedly occurred in that town when they requested assistance from the Maine State Police and the Penobscot County Sheriff’s Department, the latter of which sent its Special Response Team to Brimstone Road.

Details about what led to the standoff and what brought it to an end were not immediately available late Thursday.

“There was a child involved in the house,” said Ross. “We had a number of officers and got the child to leave the home. They were talking to [the suspect] in the home, trying to get him to come out [the last I heard].”

BDN writer Dawn Gagnon contributed to this report.

Correction:An early version of this story gave the incorrect location for the standoff. It is occurring on Brimstone Road, not Brimstone Hill Road.